ASN Wikibase Occurrence # 41109
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| Date: | Saturday 24 September 1983 |
| Time: | 10:23 |
| Type: | Eipper Quicksiver E |
| Owner/operator: | private |
| Registration: | unreg. |
| MSN: | 1531 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Sioux Falls, SD -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Sioux Falls, SD (Y14) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER TAKEOFF, THE PLT OF THE WEIGHT-SHIFT CONTROLLED, ULTRALIGHT VEHICLE ENTERED A STEEP CLIMB, THEN BEGAN A SERIES OF MANEUVERS WHICH INCLUDED PAST VERTICAL WINGOVERS. REPORTEDLY, ON HIS LAST MANEUVER, HE PERFORMED A WHIP STALL. A GROUND WITNESS STATED THAT DURING THE RECOVERY, HE 'PULLED IN TIGHT TO GET AN IMPRESSIVE DIVE.' A PLT WITNESS & 2 FAA INSPECTORS REPORTED THAT WHEN THE NOSE DROPPED, IT WENT PAST A VERTICAL POSITION. THE PLT WITNESS STATED THAT DURING THE RECOVERY, THE PLT HELD THE NOSE IN APRX A 60 DEG DIVE FOR 3 TO 4 SEC. THE FAA INSPECTORS REPORTED THAT DURING THE PULL-OUT, THE WINGS FAILED. AN EXAM REVEALED THAT THE LEFT & RIGHT INBOARD COMPRESSION STRUTS HAD BUCKLED FROM POSITIVE LOADING. THE PLT HAD MODIFIED THE ULTRALIGHT BY INSTALLING A NON-STANDARD ENG-PROP REDUCTION DRIVE SYS, BY CHANGING THE PITCH TRIM, BY ADDING A LOWER TAIL BOOM BRACE & BY ADDING A 10 LB WT TO THE NOSE TO INCREASE THE FORWARD SPEED IN A DIVE. CAUSE:
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001214X44519
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
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